Summary of study ST000166

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR000144. The data can be accessed directly via it's Project DOI: 10.21228/M8C01P This work is supported by NIH grant, U2C- DK119886.

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Study IDST000166
Study TitleCardiac Resynchronization Therapy Induces Adaptive Metabolic Transitions in the Metabolomic Profile of Heart Failure
Study Typeintervention
Study SummaryThis prospective study consisted of 24 patients undergoing CRT for advanced HF and 10 control patients who underwent catheter ablation for supraventricular arrhythmia but not CRT. Blood samples were collected before and 3 months after CRT. Metabolomic profiling of plasma samples was performed using gas chromatography–mass spectrometry and nuclear magnetic resonance.
Institute
Mayo Clinic
DepartmentDepartment of Medicine
Last NameCha
First NameYong-Mei
Emailycha@mayo.edu
Submit Date2015-05-14
Num Groups3
Total Subjects24
Raw Data AvailableNo
Analysis Type DetailGC-MS
Release Date2015-06-28
Release Version1
Yong-Mei Cha Yong-Mei Cha
https://dx.doi.org/10.21228/M8C01P
ftp://www.metabolomicsworkbench.org/Studies/ application/zip

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Project:

Project ID:PR000144
Project DOI:doi: 10.21228/M8C01P
Project Title:Cardiac Resynchronization Therapy Induces Adaptive Metabolic Transitions in the Metabolomic Profile of Heart Failure
Project Summary:Background: Heart failure (HF) is associated with ventricular dyssynchrony and energetic inefficiency, which can be alleviated by cardiac resynchronization therapy (CRT). The aim of this study was to determine the metabolomic signature in HF and its prognostic value for the response to CRT. Methods: This prospective study consisted of 24 patients undergoing CRT for advanced HF and 10 control patients who underwent catheter ablation for supraventricular arrhythmia but not CRT. Blood samples were collected before and 3 months after CRT. Metabolomic profiling of plasma samples was performed using gas chromatography–mass spectrometry and nuclear magnetic resonance. Results: The plasma metabolomic profile was altered in the HF patients, with a distinct panel of metabolites, including Krebs cycle and lipid, amino acid, and nucleotide metabolism. CRT improved the metabolic profile. The succinate/glutamate ratio, an index of Krebs cycle activity, improved from 0.58?0.13 to 2.84?0.60 (P<.05). The glucose/palmitate ratio, an indicator of the balance between glycolytic and fatty acid metabolism, increased from 0.96?0.05 to 1.54?0.09 (P<.01). Compared with the nonresponders to CRT, the responders had a distinct baseline plasma metabolomic profile, including higher isoleucine, phenylalanine, leucine, glucose, and valine levels and lower glutamate levels at baseline (P<.05). Conclusion: CRT improves plasma metabolomic profile of HF patients indicating harmonization of myocardial energy substrate metabolism. CRT responders may have a favorable metabolic profile as a potential biomarker for predicting CRT outcome.
Institute:Mayo Clinic
Department:Department of Medicine
Last Name:Cha
First Name:Yong-Mei
Email:ycha@mayo.edu
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